Revelation 17:6

And I saw that the woman was drunk on the blood of God's holy people and on the blood of those [who were killed] witnessing about Jesus. And when I saw her I was greatly amazed.

Revelation 16:6

For they [i.e., the followers of the beast. See verse 2] have shed the blood of God's holy people and [their] prophets, and you have given them blood to drink because they deserved it [i.e., these persecutors deserved the punishment they received for shedding blood].

Revelation 2:13

I know where you are living; [it is] where Satan's throne is. And [I know] that you are holding on firmly to my name, and did not deny [your] faith in me, even in the days of my faithful witness Antipas [Note: The Greek word here for witness is "martyr"], who was killed there where you are, where Satan lives.

Revelation 13:15

Now the [second] beast was given [the power] to give breath to the statue of the [first] beast, so that it could both speak and cause all those who refused to worship the statue of the [first] beast to be killed.

Acts 22:20

and when your witness Stephen was killed, I stood there, approving [of it] and [even] guarding the clothing of those who stoned him to death.'

Revelation 6:9-10

And when the Lamb broke open the fifth seal, I saw underneath the altar the souls of those who had been killed for [believing and preaching] God's message, and for the testimony [about Jesus] which they had maintained.

Revelation 12:11

And they [i.e., the brothers. See 6:9-11] gained the victory over Satan by the blood of the Lamb, and by [remaining true to] the message of their testimony. And they did not love their lives [so much that they refused] to die [for their faith].

Revelation 13:7

And he was given [the power] to wage war against the saints [i.e., God's holy people] and to conquer them; and he was given authority over every tribe, race, language group and nation.

Revelation 18:20-24

Be glad, heaven, and you saints, and you apostles, and you prophets, for God has brought judgment on her for you [i.e., for the way she treated you].'"

Treasury of Scripture Knowledge

Summary

And I saw the woman drunken with the blood of the saints, and with the blood of the martyrs of Jesus: and when I saw her, I wondered with great admiration.

General references

Bible References

The martyrs

Revelation 2:13
I know where you are living; [it is] where Satan's throne is. And [I know] that you are holding on firmly to my name, and did not deny [your] faith in me, even in the days of my faithful witness Antipas [Note: The Greek word here for witness is "martyr"], who was killed there where you are, where Satan lives.
Revelation 6:9
And when the Lamb broke open the fifth seal, I saw underneath the altar the souls of those who had been killed for [believing and preaching] God's message, and for the testimony [about Jesus] which they had maintained.
Revelation 12:11
And they [i.e., the brothers. See 6:9-11] gained the victory over Satan by the blood of the Lamb, and by [remaining true to] the message of their testimony. And they did not love their lives [so much that they refused] to die [for their faith].
Acts 22:20
and when your witness Stephen was killed, I stood there, approving [of it] and [even] guarding the clothing of those who stoned him to death.'

General references

Hebrews 12:4
You have not yet resisted to the point of [shedding] blood in your struggle against sin.